History
The track opened as a 2.52-mile road course and drag strip in 1968.
The first NASCAR Sprint Cup Series race was held in 1989.
The first nine races were 300 kilometers and switched to a 350k format in 1998.
The track was reconfigured to 1.949 miles in 1998 with the installation of an 890-foot chute between the original Turns 4 and 7.
The track was reconfigured to 2.0 miles in 2001 and re-measured at 1.99 miles in 2002.

Interesting Facts
There have been 22 NASCAR Sprint Cup Series races at Infineon Raceway since the first race there in 1989.
Rusty Wallace won the first NASCAR Sprint Cup Series pole.
Ricky Rudd won the first NASCAR Sprint Cup Series race.
13 different drivers have won poles; only four have won more than one.
Jeff Gordon (five) leads all pole winners. Ricky Rudd has four, including three consecutive (1990-92), Rusty Wallace and Kasey Kahne have two apiece.
There have been consecutive pole winners three times: Ricky Rudd (1990-92) and Jeff Gordon (1998-99 and 2004-05).
14 different drivers have won races; five have multiple victories there – led by Jeff Gordon with five. Ernie Irvan, Ricky Rudd, Tony Stewart and Rusty Wallace (all with two) are the other multiple-race winners.
Jeff Gordon is also the only driver with consecutive wins, winning in 1998, 1999 and 2000.
Five of 22 races have been won by the pole winner, including three times by Jeff Gordon. His victory from the pole in 2004 is the most recent.
The lowest starting position by a race winner was 32nd, by Juan Pablo Montoya; it also was his first career NASCAR Sprint Cup Series win.
Boris Said posted his first career NASCAR Sprint Cup Series pole.
Jeff Gordon is the all-time leader in road-course victories, with nine. Tony Stewart is second, with seven.